Use the Dot Product to Find the Magnitude of U $\mathbf { u } = \langle 2 , - 9 \rangle$

question 43

Multiple Choice

Use the dot product to find the magnitude of u.​ $\mathbf { u } = \langle 2 , - 9 \rangle$ ​

• A) \(\sqrt { 89 }\)
• B) \(\sqrt { 83 }\)
• C) \(\sqrt { 85 }\)
• D) \(9\)
• E) \(\sqrt { 87 }\)

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Definitions:

Nativist Position

The perspective in cognitive development that emphasizes the role of genetic inheritance and biology in learning and behavior, often opposing the notion that understanding comes solely from experience or environment.

Phonological Awareness

The ability to recognize and manipulate sounds in words, a critical skill for the development of reading.

Shiritori

A word game from Japan where participants alternate saying words that start with the last kana of the word said before.

Overregularization

A language acquisition error where children apply regular grammatical patterns to words that are exceptions.